I absolutely agree that agreeing with the memo doesn't make someone a far right extremist, and I don't believe I ever stated or insinuated that. That's a bit of a non-sequitur, though. This is the exact point I was referring to:

they won't change their position. If anything, their position will be radicalized. For example, from classical liberal to alt-right.

This is been a common sort of mantra since Trump won the presidency. Whenever we have a controversial event like this, people make a statement that any actions by those on the left will only further radicalize people in the other direction. I don't think it's true, but most of all, I don't think that other direction really leads anywhere useful. For the reasons I outlined previously.